Patent US2511290A successfully refreshed from Google Patents.
US2511290A
Expired / Lapsed
US
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Method of impregnating activated carbon
Assignee: United States, WAR, Secretary of
•
Filing: 1942-05-01
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Granted: 1950-06-13
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Expires: 1962-05-01
Abstract
No abstract record available.
Inventors
- 👤 Jacque C Morrell
- 👤 George T Tobiasson
- 👤 Jesse F Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:02
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/30; C01B32/312; C01B32/342; C01B32/348
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1635012A
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US1956585A
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US2012098A
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US2130731A
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US2197792A
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US2323920A
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US2349249A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |